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--source include/not_embedded.inc
# Test that wait_timeout does not cause connection to be closed, when connection is delayed due to
# threadpool internal problems, e.g misconfiguration - too few threads and queueing.
# So if client did not cause wait_timeout, do not report it either.
# See MDEV-21101 for details.
# Intentionally misconfigure threadpool to have at most 1 or 2 threads (
# depends on the implementation). Use minimal wait_timeout, do some slow queries from
# different connections simultaneously, to force queueing occurs.
# Verify connections are intact, even if queueing time exceeds wait_timeout
SELECT
@@global.wait_timeout, @@global.thread_pool_max_threads, @@global.thread_pool_size,
@@global.thread_pool_oversubscribe, @@global.thread_pool_stall_limit
INTO
@_wait_timeout,@_thread_pool_max_threads,@_thread_pool_size,
@_thread_pool_oversubscribe,@_thread_pool_stall_limit;
SET @@global.wait_timeout=1,
@@global.thread_pool_max_threads=2,
@@global.thread_pool_size=1,
@@global.thread_pool_oversubscribe=1,
@@global.thread_pool_stall_limit=10;
--connect (c1, localhost, root,,)
--connect (c2, localhost, root,,)
--connect (c3, localhost, root,,)
--connection c1
--send select sleep(1.1)
--connection c2
--send select sleep(1.1)
--connection c3
--send select sleep(1.1)
--connection default
--send select sleep(1.1)
--connection c1
--reap
--connection c2
--reap
--connection c3
--reap
--connection default
--reap
--disconnect c1
--disconnect c2
--disconnect c3
--connection default
SET @@global.wait_timeout=@_wait_timeout,
@@global.thread_pool_max_threads=@_thread_pool_max_threads,
@@global.thread_pool_size=@_thread_pool_size,
@@global.thread_pool_oversubscribe=@_thread_pool_oversubscribe,
@@global.thread_pool_stall_limit=@_thread_pool_stall_limit;
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